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atomic number 55 is a noun meaning "a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal". It carries one recorded sense.
a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
Definitions, synonyms and semantic relations for atomic number 55 come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.